h1,h2,h3,h4,h5,h6,form,dl,dd,dt,p,ul,pre,body,ol{
  padding: 0;
  margin: 0;
}
ul,ol{
  list-style:none;
}
a,a:visited{
  color: #000;
  text-decoration: none;
}
img{
  display: block;
  border: none;
}
:root{
  min-width:320px;
  margin:0 auto;
  overflow-x: hidden;
}
